php - 奇怪的 mysql_update 函数似乎只获取 $this-> info

Question

好吧，由于某种原因，我只收到发送到 mysql 数据库的 $this-> 信息

即:应该是这个

"UPDATE `shop_products` SET shopid = 1 WHERE id = 42"

但是我得到了这个

"UPDATE `shop_products` SET 1 WHERE 42"

这是我正在使用的代码。我不知道为什么这不起作用

public function addstoreproduct($id,$shopid,$categoryid,$productname,$description,$price,$rcb)
    {
        $this->id = $id;
        $this->shopid = $shopid;
        $this->categoryid = $categoryid;
        $this->productname = $productname;
        $this->descriptionid = $description;
        $this->price = $price;
        $this->rcb = $rcb;

        mysql_query("UPDATE `shop_products` SET shopid = "+$this->shopid+" WHERE id = "+$this->id+"");

        //$this->updatedb('shop_products','shopid='+$this->shopid+'','"id='+$this->id+'"');


    }

Answer 1

尝试

mysql_query("UPDATE shop_products SET shopid = ". $this->shopid . "WHERE id = ". $this->id);